The 04A-K01 is a keycap component designed for Grayhill's Series 04 joystick-action pushbutton switches, specifically engineered for position locator and cursor control applications on CRT screens and menu displays. The keycap features a square profile measuring 0.725 ± 0.010 inches (18.42 ± 0.25 mm) with a height of 1.315 ± 0.020 inches (33.40 ± 0.51 mm), and is manufactured from ABS material to provide durability and consistent tactile feedback. It is designed to interface seamlessly with the basic 04A switch assembly, which operates at rated loads of 250 mA at 115 Vac or 125 mA at 220 Vac with a contact resistance of 25 milliohms maximum and an operating temperature range of -40°C to +85°C. The 04A-K01 keycap is ideal for industrial control panels, computer input devices, and navigation systems where reliable joystick-style actuation and visual feedback are essential.